The video, which we first saw at The Verge, is titled "Earth" and includes a voiceover by astronomer Carl Sagan reading from his 1994 book "Pale Blue Dot — A Vision of the Human Future in Space."

"The earth is a very small stage in a vast cosmic arena," Sagan reads over the ad. "In our obscurity, in all this vastness, there is no hint that help will come from elsewhere to save us from ourselves. The earth is the only world known so far to harbour life. There is nowhere else, at least in the near future, to which our species can migrate."

"Like it or not, for the moment, the earth is where we make our stand. It underscores our responsibility to deal more kindly with one another and to preserve and cherish the only home we've ever known."

Cook responded by saying "When we work on making our devices accessible by the blind, I don't consider the bloody ROI. If you want me to do things only for ROI reasons, you should get out of this stock."